Here is a round-up of all the transfers that were completed before and after the deadline, with Barcelona confirming the exit of Antoine Griezmann.
Click through the gallery above to see all of the completed transfers you may have missed before and after deadline, including business done by almost all of football's biggest clubs!
Some big confirmed deals:
Griezmann out, De Jong in at Barca
In arguably the biggest news of deadline day, 30-year-old Antoine Griezmann has returned to Atletico Madrid on a loan deal though included in the contract is an obligation to buy. Following his move, Barca brought in Sevilla striker Luuk de Jong.
Saul joins Chelsea
Atletico Madrid midfielder Saul Niguez has joined last season's UEFA Champions League winners on a season-long loan deal, with the club having the option of making his stay permanent at a later stage.
Real Betis sign Bellerin
Arsenal right-back Hector Bellerin has joined Betis on a season-long loan which reportedly does not include an option to buy.
Barca sell Emerson
Brazilian right-back Emerson has joined Tottenham Hotspur from the Blaugrana, just weeks after being bought back by the club following a two-year spell at Real Betis in LaLiga.
Real Madrid announce star signing
Los Blancos have confirmed the arrival of 18-year-old France international Eduardo Camavinga, who has joined the club on a six-year contract from Stade Rennes.
James joins Leeds from Man Utd
The Red Devils have announced the sale of 23-year-old Wales winger Daniel James, who has joined Leeds United.
Man Utd confirm Ronaldo arrival
The Red Devils have today announced the completion of the 36-year-old's return to the club, 12 years after he left to join Real Madrid in a then-world-record transfer fee.
Here is where Ronaldo will rank among United's 10 highest-paid players: